[R] [datatable-help] Transform characters to numbers and compare

[arun]

Hi,
Try:
df2 <- df 
df2[] <- lapply(df2,function(x) as.character(as.numeric(factor(x,levels=unique(df$G1))))) 

A.K.


On Sunday, April 13, 2014 3:36 PM, Sergio.pv <serpalma.v at gmail.com> wrote:
I have a data.frame of two vectors.

df <- data.frame(G1=c("b","a","e","d","c"),
                 G2=c("c","d","e","b","a"))
You can see that both vectors have the same characters, but in diferent
order. I want to convert them into numbers and then compare them.

To compare G2 to G1, G1 must be the reference, so the output will be this:

df2 <- data.frame(G1=c("1","2","3","4","5"),
                 G2=c("5","4","3","1","2"))
Is there a way to do this?, thanks



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